I took the ccna 640-802 exam and received a 785 and needed a 825 to pass (44 questions). I prepared for this exam by making a lab with two 2650 routers and two 2950 switches. I read several books and completed both the Boson and Transcender practice exams with almost 100% correct on all the prep tests the first time around.

The problem is that the actual exam questions are far more complex then what the Boson and Transcender offered even though these exams are geared for the new CCNA exam.